RealView Compilation Tools Compiler Reference Guide - ARM ...

Compiler Command-line Options
• The NEON Vectorizing Compiler Guide.
2.1.121 --[no_]vfe
This option enables or disables Virtual Function Elimination (VFE) in C++.
VFE enables unused virtual functions to be removed from code. When VFE is enabled,
the compiler places the information in special sections with the prefix .arm_vfe_. These
sections are ignored by linkers that are not VFE-aware, because they are not referenced
by the rest of the code. Therefore, they do not increase the size of the executable.
However, they increase the size of the object files.
Mode
This option is effective only if the source language is C++.
Default
The default is --vfe, except for the case where legacy object files compiled with a
pre-RVCT v2.1 compiler do not contain VFE information.
See also
• Calling a pure virtual function on page C-3
• Unused function elimination on page 3-12 in the Linker Guide.
2.1.122 --via=filename
This option instructs the compiler to read additional command-line options from a
specified file. The options read from the file are added to the current command line.
Via commands can be nested within via files.
Syntax
--via=filename
Where:
filename
is the name of a via file containing options to be included on the
command line.
Example
Given a source file main.c, a via file apcs.txt containing the line:
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